A Journey of sorts.

Truckers, the first book of The Nomes by Terry Pratchett

Most of the things you are hunting are also hunting you...

Maskilin must hunt ferocious beasts, gather enormous amounts of food and perform all the finicky and back breaking maintenance for the 8 very old and cranky people he lives with.
Grimma does the cooking, the cleaning and the reassuring needed in any household/hole in the ground. A journey of sorts.

Maskilin and Grimma are not human, oh sure, they have the right number of legs, arms and heads and the eyes and ears are in approximately the right place, but they look like brick walls on legs. They are so stocky they make Japanese sumo wrestlers look half starved by comparison. As a species the Nomes don't live long, ten years is a long lifetime, but they do live fast, for a Nome one year lasts as long as ten years does to a human.

They are only 4 inches tall...

Truckers tells the story of Maskilin, Grimma and the old people's hardships and their subsequent escape attempt. It also tells the story of The Store.

This is a very nice story, it's plot is good but direct and the characters are believable enough but i'm afraid that it is not a young adult book it is more directed at children.